MalwarePublished 9 Nov 2026

u-chan-secrets (npm) · Malicious Code

Affects u-chan-secretsSource GCVE Database

Malicious package : remove u-chan-secrets and rotate any secrets on hosts that installed it.

Data as of 9 Nov 2026, 09:08 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-18777

What to do

Remove u-chan-secrets from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmu-chan-secrets	Affected =5.2.1	Fixed in–

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Description

The u-chan-secrets npm package version 5.2.1 contains malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys stored on the affected system should be rotated immediately from a different, trusted computer. Removal of the package alone does not guarantee elimination of all malicious software introduced by it, as full control of the system may have been given to an attacker.

Impact

Any system with the u-chan-secrets package version 5.2.1 installed or running should be considered fully compromised. Attackers may have gained full control over the system, exposing all stored secrets and keys. This level of compromise can lead to unauthorized access, data theft, and further malicious activity. The threat is severe and requires immediate remediation to prevent ongoing or future damage.

Defensive guidance

Remove the u-chan-secrets package version 5.2.1 immediately from all affected systems. Rotate all secrets and keys stored on compromised machines using a separate, trusted computer. Because the system may be fully compromised, consider rebuilding or restoring the system from a known good backup to ensure complete removal of malicious software.

Summary

The u-chan-secrets package version 5.2.1 distributed via npm contains embedded malicious code. Installation or execution of this package results in a full compromise of the host system. The attacker potentially gains complete control, enabling unauthorized access to secrets and keys stored on the machine. Due to the depth of compromise, simply uninstalling the package is insufficient to ensure system integrity, and secret rotation from a separate trusted environment is strongly advised.

References

github.com/advisories/GHSA-44c7-vxrp-h5fq (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Nov 2026, 09:08 UTC

Technical details

References

Community reviews